Target and orbit feedback simulations of a muSR beam line at BNL

[摘要] Well-polarized positive surface muons are a tool to measure the magnetic properties of materials since the precession rate of the spin can be determined from the observation of the positron directions when the muons decay. For a dc beam an ideal ??SR flux for surface ??⁺ should be about 40 kHz/mm². In this report we show how this flux could be achieved in a beam line using the AGS complex at BNL for a source of protons. We also determined that an orbit feedback system with a pair of thin silicon position monitors and kickers would miss the desired flux by at least an order of magnitude, even with perfect time resolution and no multiple scattering.

[发布日期] 2015-07-28

[学科分类] 核物理和高能物理